Mayweather-Ortiz

Floyd Mayweather is the favorite in his fight with Conor McGregor on Aug. 26.

Mayweather is favored at -450, according to OddsShark, meaning somebody would have to bet $450 on Mayweather in order to win $100.

McGregor's odds are +325.

Mayweather, 40, is 49-0 in his pro boxing career with 26 KOs. His last fight was in 2015 when he defeated Andre Berto by unanimous decision. Mayweather's last knockout came on Sept. 17, 2011, when he dropped Victor Ortiz in the fourth round.

The 29-year-old McGregor has gone 21-3 in MMA with 18 knockouts.

What is Floyd Mayweather's Record? Results, History During Pro Career

Floyd Mayweather has a chance of making history, if he wins Saturday night's fight against UFC star Conor McGregor at T-Mobile Arena in Las Vegas. Mayweather has the chance to beat Rocky Marciano's 49–0 record. His current record stands at 49 victories with 26 knockouts and no losses.

Rocky Marciano Jr. believes that the upcoming match should not count toward Mayweather's record but the fight is a sanctioned boxing match. Mayweather is currently the odds-on favorite to win.

He has fought professionally since 1996. Mayweather's last victory came against Andre Berto on Sept. 12, 2015. Mayweather retired but is heading back into the ring for the first time in two years.

Here's a look at Mayweather's every one of his career victories as a professional:

1996

Oct. 11 – W, Roberto Apodaca, 2nd round KO

Nov. 30 – W, Reggis Sanders, 4-round victory

1997

Jan. 18 – W, Jerry Cooper, 1st round TKO

Feb. 1 – W, Edgar Ayala, 2nd round KO

March 12 – W, Kino Rodriguez, 1st round TKO

April 12 – W, Robert Giepert, 1st round TKO

May 9 – W, Tony Duran, 1st round TKO

June 14 – W, Larry O'Shields, 6-round victory

July 12 – W, Jesus Chavez, 5th round TKO

Sept. 6 – W, Luis Leija, 2nd round KO

Oct. 14 – W, Felipe Garcia, 6th round KO

Nov. 20 – W, Angelo Nunez, 3rd round TKO

1998

Jan. 9 – W, Hector Arroyo, 5th round TKO

Feb. 28 – W, Sam Girad, 2nd round KO

March 23 – W, Miguel Melo, 3rd round TKO

April 18 – W, Gustavo Cuello, 10-round victory

June 14 – W, Tony Pep, 10-round victory

Oct. 3 – W, Genaro Hernandez, 8th round TKO

Dec. 19 – W, Angel Manfredy, 2nd round TKO

1999

Sept. 11 – W, Carlos Gerena, 7th round TKO

May 22 – W, Justin Kuuko, 9th round KO

Feb. 17 – W, Carlos Rios, 12-round victory

2000

March 18 – W, Goyo Vargas, 12-round victory

Oct. 21 – W, Emanuel Burton, 9th round TKO

2001

Jan. 20 – W, Diego Corrales, 10th round TKO

May 26 – W, Carlos Hernandez, 12-round win

Nov. 10 – W, Jesus Chavez, 10th round TKO

2002

April 20 – W, Jose Luis Castillo, 12-round victory

Dec. 7 – W, Jose Luis Castillo, 12-round victory

2003

April 19. W, Victoriano Sosa, 12-round victory

Nov. 1 – W, Phillip N'Dou, 7th round TKO

2004

May 22 – W, DeMarcus Corley, 12-round victory

2005

Jan. 22 – W, Henry Bruseles, 8th round TKO

June 25 – W, Arturo Gatti, 6th round TKO

Nov. 19 – W, Sharmba Mitchell, 6th round TKO

2006

April 8 – W, Zab Judah, 12-round victory

Nov 4 – W, Carlos Baldomir, 12-round victory

2007

May 5 – W, Oscar De La Hoya, 12-round victory

Dec. 8 – W, Ricky Hatton, 10th round TJO

2009

Sept. 19 – W, Juan Manuel Marquez, 12-round victory

2010

May 1 – W, Shane Mosley, 12-round victory

2011

Sept. 17 – W, Victor Ortiz, 4th round KO

2012

May 5 – W, Miguel Cotto, 12-round victory

2013

May 4 – W, Robert Guerrero, 12-round victory

Sept. 14 – W, Canelo Alvarez, 12-round victory

2014

May 3 – W, Marcos Medina, 12-round victory

Sept. 13 – W, Marcos Medina, 12-round victory

2015

May 2 – W, Manny Pacquiao, 12-round victory

Sept. 12 – W, Andre Berto, 12-round victory

No chance of Mayweather-McGregor fight - Ortiz

Victor Ortiz doesn't believe there'll be a fight between Floyd Mayweather and Connor McGregor due to the different sports' sanctions.

No chance of Mayweather-McGregor fight - Ortiz

Victor Ortiz doesn't believe there'll be a fight between Floyd Mayweather and Connor McGregor due to the different sports' sanctions.

No chance of Mayweather-McGregor fight - Ortiz

Victor Ortiz doesn't believe there'll be a fight between Floyd Mayweather and Connor McGregor due to the different sports' sanctions.

Sporting villains: Floyd Mayweather

“Money” has three times been charged with battery and convicted twice, with the last conviction resulting in a 60-day prison sentence. He also caught the ire of the public for his derogatory remarks against rapper T.I’s wife. His controversial knockout of Victor Ortiz when the referee was looking away also springs to mind.

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather and his attempt at an undefeated record.

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather and his attempt at an undefeated record.

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather and his attempt at an undefeated record.

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather and his attempt at an undefeated record.

Victor Ortiz Calls Out Floyd Mayweather

Victor Ortiz Calls Out Floyd Mayweather and his attempt at an undefeated record.

victor ortiz

Victor Ortiz, left, is perhaps best known for his odd loss to Floyd Mayweather in 2011. (AP Photo)

FILE - This Sept. 17, 2011 file photo shows Floyd Mayweather Jr., left, punching Victor Ortiz during their WBC welterweight title fight in Las Vegas. Lawyers for Mayweather say the undefeated champion boxer may never fight again if he's not released from the Las Vegas jail he entered earlier this month. (AP Photo/Julie Jacobson, File)

FILE - This Sept. 17, 2011 file photo shows Floyd Mayweather Jr., left, punching Victor Ortiz during their WBC welterweight title fight in Las Vegas. Lawyers for Mayweather say the undefeated champion boxer may never fight again if he's not released from the Las Vegas jail he entered earlier this month. (AP Photo/Julie Jacobson, File)

Lawyer: Jail conditions may end Mayweather career

FILE - This Sept. 17, 2011 file photo shows Floyd Mayweather Jr., left, punching Victor Ortiz during their WBC welterweight title fight in Las Vegas. Lawyers for Mayweather say the undefeated champion boxer may never fight again if he's not released from the Las Vegas jail he entered earlier this month. (AP Photo/Julie Jacobson, File)

FILE: Floyd Mayweather Jr. Pleads Guilty, Gets 3 Months

LAS VEGAS, NV - SEPTEMBER 17: Floyd Mayweather Jr. celebrates after defeating Victor Ortiz by fourth round knockout during their WBC welterweight title fight at the MGM Grand Garden Arena on September 17, 2011 in Las Vegas, Nevada. It was reported that Floyd Mayweather Jr. has been sentenced to three months in jail after pleading guilty to a charge of misdemeanor battery domestic violence and no contest on two counts of harassment against an ex-girlfriend December 21, 2011. (Photo by Al Bello/Getty Images)

FILE: Floyd Mayweather Jr. Pleads Guilty, Gets 3 Months

LAS VEGAS, NV - SEPTEMBER 17: Floyd Mayweather Jr. speaks during his post-fight news conference after his fourth round knockout of Victor Ortiz in their WBC welterweight title fight at the MGM Grand Garden Arena on September 17, 2011 in Las Vegas, Nevada. It was reported that Floyd Mayweather Jr. has been sentenced to three months in jail after pleading guilty to a charge of misdemeanor battery domestic violence and no contest on two counts of harassment against an ex-girlfriend December 21, 2011. (Photo by Ethan Miller/Getty Images)

FILE: Floyd Mayweather Jr. Pleads Guilty, Gets 3 Months

LAS VEGAS, NV - SEPTEMBER 17: Floyd Mayweather Jr. celebrates his fourth-round knockout of Victor Ortiz to win the WBC welterweight title September 17, 2011 in Las Vegas, Nevada. It was reported that Floyd Mayweather Jr. has been sentenced to three months in jail after pleading guilty to a charge of misdemeanor battery domestic violence and no contest on two counts of harassment against an ex-girlfriend December 21, 2011. (Photo by Ethan Miller/Getty Images)

Floyd Mayweather Jr. Speaks Getty Images

LAS VEGAS, NV - SEPTEMBER 17: Floyd Mayweather Jr. speaks during his post-fight news conference after his fourth round knockout of Victor Ortiz in their WBC welterweight title fight at the MGM Grand Garden Arena on September 17, 2011 in Las Vegas, Nevada. It was reported that Floyd Mayweather Jr. has been sentenced to three months in jail after pleading guilty to a charge of misdemeanor battery domestic violence and no contest on two counts of harassment against an ex-girlfriend December 21, 2011. (Photo by Ethan Miller/Getty Images)

Floyd Mayweather Jr. Celebrates Getty Images

LAS VEGAS, NV - SEPTEMBER 17: Floyd Mayweather Jr. celebrates after defeating Victor Ortiz by fourth round knockout during their WBC welterweight title fight at the MGM Grand Garden Arena on September 17, 2011 in Las Vegas, Nevada. It was reported that Floyd Mayweather Jr. has been sentenced to three months in jail after pleading guilty to a charge of misdemeanor battery domestic violence and no contest on two counts of harassment against an ex-girlfriend December 21, 2011. (Photo by Al Bello/Getty Images)

Floyd Mayweather Jr. Celebrates His Fourth-round Knockout Of Victor Ortiz To Win The WBC Welterweight Title September Getty Images

LAS VEGAS, NV - SEPTEMBER 17: Floyd Mayweather Jr. celebrates his fourth-round knockout of Victor Ortiz to win the WBC welterweight title September 17, 2011 in Las Vegas, Nevada. It was reported that Floyd Mayweather Jr. has been sentenced to three months in jail after pleading guilty to a charge of misdemeanor battery domestic violence and no contest on two counts of harassment against an ex-girlfriend December 21, 2011. (Photo by Ethan Miller/Getty Images)

AFP PICTURES OF THE YEAR 2011 Floyd Mayweather Jr. Slams A Right To The Head Of WBC Welterweight Champion Victor Ortiz AFP/Getty Images

AFP PICTURES OF THE YEAR 2011 Floyd Mayweather Jr. slams a right to the head of WBC Welterweight Champion Victor Ortiz in the 4th round as referee Joe Cortez looks on, ending the fight on September 17, 2011 at the MGM Grand Garden Arena in Las Vegas. Mayweather beat Ortiz in a knockout to win the WBC Welterweight title. (Photo by John Gurzinski/AFP/Getty Images)

Victor Ortiz (L) falls towards the canvas after being hit with a right from Floyd Mayweather

WBC Welterweight champion Victor Ortiz (L) falls towards the canvas after being hit with a right from Floyd Mayweather in the 4th ending the fight on September 17, at the MGM Grand Garden Arena in Las Vegas. Ortiz, a controversial knockout victim at the hands of unbeaten Mayweather, began pushing the case on Monday for a chance to regain the welterweight title in a rematch

Manny Pacquiao celebrates after defeating Shane Mosley in May

Manny Pacquiao of the Philippines celebrates after defeating US Shane Mosley during their bout for the World Boxing Organization welterweight title at the Garden Arena in the MGM Grand in Las Vegas, Nevada on May 7, 2011. Some boxing observers felt Floyd Mayweather might be treating Victor Ortiz as preparation for Pacquiao. But now it is anyone's guess

Floyd Mayweather Jr. speaks during his post-fight news conference

Floyd Mayweather Jr. speaks during his post-fight news conference after his fourth round knockout of Victor Ortiz in their WBC welterweight title fight at the MGM Grand Garden Arena on September 17, in Las Vegas, Nevada. Mayweather came off a 16-month layoff to knock out Ortiz and take the WBC belt in a highly eventful world title fight that raised more questions than answers

Referee Joe Cortez calls the fight after Victor Ortiz is knocked out by Floyd Mayweather Jr

Referee Joe Cortez calls the fight after Victor Ortiz is knocked out by Floyd Mayweather Jr. during their WBC welterweight title fight at the MGM Grand Garden Arena on September 17, in Las Vegas, Nevada. Mayweather came off a 16-month layoff to knock out Ortiz and take the WBC belt in a highly eventful world title fight that raised more questions than answers

Floyd Mayweather Jr. slams a right to the head of WBC Welterweight Champion Victor Ortiz in the 4th round

Floyd Mayweather Jr. slams a right to the head of WBC Welterweight Champion Victor Ortiz in the 4th round as referee Joe Cortez looks on, ending the fight on September 17, at the MGM Grand Garden Arena in Las Vegas. Mayweather came off a 16-month layoff to knock out Ortiz and take the WBC belt in a highly eventful world title fight that raised more questions than answers

Mayweather missteps, avoids Pacman question

Floyd Mayweather Jr. took the welterweight title from Victor Ortiz with an easy fourth-round knockout

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz (C) takes photos with fans as he appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz (C) takes photos with fans as he appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)

Victor Ortiz Appears At Studio 54

LAS VEGAS, NV - SEPTEMBER 18: (EXCLUSIVE COVERAGE) Boxer Victor Ortiz appears at a post-fight party at Studio 54 inside the MGM Grand Hotel/Casino early on September 18, 2011 in Las Vegas, Nevada. Ortiz lost the WBC welterweight title to Floyd Mayweather Jr. by fourth-round knockout on September 17. (Photo by Ethan Miller/Getty Images for Studio 54)